Cooling unit for refrigerators



July 31, 1928.

F. G. SLAG EL COOLING-YUNIT FOR REERTGERA'I'ORS Filed Apfil 23, 1927 '4 Sheets-Sheet l COOLING UNIT FOR REFRIGERATORS Filed April 23, 1927 4 Sheets-Sheet 2 Fig. 2.

' gwuento'c July 31, 1928.

1,679,010 F. G. SLAGEL.

COOLING UNIT FOR REFRIGERATORS I Filed April 23, 1927 4 ShfitS-ShGGt 3 attorney July 31,v 1928.

F. G. SLAGEL COOLING UNIT FOR REFRIGERATORS 4 Sheets-Sheet Filed April 25, 1927 ifggIlllllllll-ig/ attozmg Patented July 31, 1928. UNITED STATES 1,679,010 PATENT OFFICE.

rnANxLm a. mean, or BUFFALO, NEW ORK, assrenon T0 rEnnEnsuAnUrAc- TUBING COMPANY me, or BUFFALO, NEW YORK, A CORPORATION or Nnvq YORK.

GOOLING UNIT FOR REFRIGERATORS.

Application filed April 23,1921. serial in. 186,027.

This invention relates to a cooling unit for refrigerators which may be either submerged in brine for obtainin freezing temperatures as in ice cream ca inets, and the same may also be used in commerc al refrigerators in which a coating of ice accumulates on the unit. 1

It is the object of this invention to provide a cooling unit for this purpose which is comparatively simple in construction, efficient in operation and very strong and compact so that it is not liable to be injured and will take up very little room.

In the accompanying drawings:

Figure 1 is a frontelevation of the improved cooling unit. Figure 2 is a vertical transverse section of the same. Figure 3 is a side elevation thereof, partly broken away. Figure 4 is a top plan view partly broken away.

Similar characters of reference indicate like ings:

The numeral 10 represents the vaporizing chamber, header or manifold which is adapted to receive the refrigerant in vaporized form and to deliver the same in liquid form in a well known manner. Below the vaporizing chamber are arranged a pluralrows and a single longitudinal central row,

arranged between the two side rows. Each loop of one of the side rowsconsists of inner and outer upright sections 11,12 which are arranged transversely in line relatively to the vaporizin chamber and having inturned upper en s 13, 14, which are connected with the underside of the vaporizing chamber on one side thereof, and a return bend or bow 15 connecting the lower ends of the upright sections 11, 12.

The longitudinal rows of the inner upright sections of both side rows are separated from each "otherby an intervening space which receives the "central row of intermediate loops, each of which consists of two upright sections 16, 17 arranged lengthwise in line and connected at their up er ends with the central part of the underside of the vaporizing chamber while their lower parts in the several views of the draw ends are connected by a return bender how 18. I The relative arrangement of the central and side rows of loops is such that upright sections or members of the central loops are arranged transversely in line with or opposite to the spaces between the upright sections or members of the side loops, thereby distributing the radiating area of the cooling unit with greater uniformity over the entire space in which the same is installed.

As an aid in increasing the heat absorption of the cooling unit a web 19 of sheet metal, preferably copper or the like, is arranged within each loop and each of the webs is provided with horizontal corrugations 20 and vertical projections 21 on the several corrugations so as to secure the maximum radiating surface within a given space. I

By arranging the upright sections of each loop one behind the other crosswise of the cooling unit the spaces between the adjacent side loops will not become filled up by the coating of ice whichforms on the unit in case it is used in the coolin compartment of a refrigerator, but insteafwillform upright ribs of ice coating, as shown by dotted lines 22 in Fig. 4, thereby permitting of a considerable accumulation of ice on the unit and avoiding obstructing the air spaces and permitting maintenance of free clrculation of air and promoting rapid cooling of the space containing the cooling unit.

This unitnotonly effects a greater temperature transference but the same is also very compact and this leaves more room available for storing goods to be cooled, and

the same is also strong and durable and not liable to be injured when handling goods stored in the cooling space near this unit.

Moreover, the several parts of this cooling unit can be manufactured economically and assembled very easily, thereby enabling this unit to be marketed advantageously to the trade. When using this unit in an ice-cream cabinet or the like as a substitute for an ice pack, the coils are submerged in a calcium .chloride brine or other liquid refrigerant in order to obtain zero temperature in which case no ice accumulates on the coils.

I claim as my invention:

1. A cooling unit for refrigerators comprising a vaporizing chamber, a plurality of refrigerant loo s arranged transversely relatively to said 0 amber and connected at their upper ends therewith, and a plurality of refrigerant loops arranged lengthwise relative to said chamber and connected at their upper ends therewith, each of said loops having two upright sections and the upright sections of said longitudinal loops being arranged opposite the spaces between the upright sections of the transverse loops.

2. A cooling unit for refrigerators comprising a vaporizing chamber, a plurality of longitudinal rows of transverse refrigerant loops connected at their upper ends with said chamber, and a row of longitudinal loops arranged lengthwisebetween said rows of transverse loops and connected at their upper ends withsaid chamber.

3. A cooling unit for refrigerators comprising a vaporizing chamber, a plurality of longitudinal rows of transverse refrigerant loops connected at their upper ends with said chamber, a row of longitudinal loops arranged lengthwise between said rows of transverse loops and connected at their upper ends with said chamber, each of said loops having upright sections and the upright sections of said longitudinal loops being arranged opposite the spaces between the upright sections of the transverse loops, and corrugated radiating webs arran ed within each loop and connected at its e ges with the members thereof.

In testimony whereof I hereby aflix my signature.

FRANKLIN G. SLAGEL. 

